Collection: Holster Shells | Shop Cloak Shells for Multiple Gun Models

A holster shell is the molded outer portion of a holster that locks around the specific firearm. In the Alien Gear modular holster system, each shell is firearm-specific, offering precision retention and allowing you to swap shells across compatible IWB and OWB platforms—eliminating the need to buy a whole new holster for every gun.

Select your holster shell based on your exact firearm make, model, and generation. Alien Gear offers an extensive fit library to ensure perfect shell-to-pistol compatibility, including options for popular models like Glock, Sig Sauer, Springfield, Smith & Wesson, and more.

Yes. Each Alien Gear shell is compatible with multiple carry platforms, including inside-the-waistband (IWB), outside-the-waistband (OWB), appendix, and even shoulder or chest rigs, making it part of the best modular holster system for adaptable EDC.

The shell defines your retention level. Alien Gear shells feature adjustable passive retention, giving you full control over draw resistance while maintaining trigger guard protection and secure lockup during movement.

Yes. Each Alien Gear holster shell fully encloses the trigger guard, supports firm retention, and is built with high-strength polymer to safely carry loaded firearms during everyday use, duty, or tactical applications.

Absolutely. When paired with the correct Alien Gear holster base, shells work seamlessly with tactical setups, including MOLLE gear, drop leg platforms, and duty belt loops, giving you modularity without compromising stability.

Yes. That’s the power of the Alien Gear holster shell swap system. Just switch the shell while keeping the same base, allowing you to carry multiple firearms using a single holster system—ideal for range, rotation, or duty weapon changes.

To convert, simply unscrew your current shell and attach the new model-specific shell to your holster base. The shell swap process is tool-free or requires minimal adjustment, making it fast and user-friendly.

Invest in a modular holster system like Alien Gear’s and add only the holster shells you need for each firearm. This lets you build a multi-gun carry setup without buying full holsters for each pistol.

Use Alien Gear’s Shell Swap Program or order a new shell compatible with your platform. You’ll have a fully functional holster for your new handgun—no need to purchase an entirely new rig.